Title :
Effects of Buoyancy on Heat Transfer on Circular Staggered Cylinders
Author :
Sirisup, Sirod ; Tomtratoke, Saifhon ; Vannarat, Sornthep
Author_Institution :
Large Scale Simulation Res. Lab., Nat. Electron. & Comput. Technol. Center, Pathumthani, Thailand
Abstract :
Incompressible flow around a pair of circular cylinders in various staggered arrangements with heated upstream cylinder is investigated in this study. Three dimensional direct numerical simulation (DNS) has been performed with spatial discretization based on the spectral/hp element method with the Reynolds numbers of 200 and the Richardson numbers are varied from 0.05 to 2.0. The longitudinal separation to cylinders diameter ratio is set to 2.5 and 5.0 with transverse separation to cylinders diameter ratio is fixed at 1.0. The investigation focuses on the effects of buoyancy as well as cylinders placement on both flow structures and local heat transfer characteristics of both cylinders.
Keywords :
convection; external flows; flow simulation; Reynolds numbers; Richardson numbers; buoyancy; circular staggerred cylinders; cylinders diameter ratio; direct numerical simulation; heat transfer; incompressible flow; mixed convection; transverse separation; Computational modeling; Computer simulation; Engine cylinders; Heat transfer; Interference; Laboratories; Large-scale systems; Numerical simulation; Power engineering and energy; Signal processing; Direct numerical simulation; Mixed Convection; Staggerred cylinders;
Conference_Titel :
2009 International Conference on Signal Processing Systems
Conference_Location :
Singapore
Print_ISBN :
978-0-7695-3654-5
DOI :
10.1109/ICSPS.2009.184
